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Sue s monthly earnings consist of a monthly salary and a 4

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Sue s monthly earnings consist of a monthly salary and a 4 [#permalink]

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New post 27 Dec 2010, 13:58
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Sue’s monthly earnings consist of a monthly salary and a 4 percent commission on the portion of her monthly sales that is in excess of $2,000. If Sue’s monthly salary was the same in July as in August, how much greater were her sales in July than in August?

(1) Sue’s monthly earnings were $3,620 in July and $3,580 in August.
(2) Sue’s monthly salary was $3,500 in July and in August.
[Reveal] Spoiler: OA

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Re: Sue s monthly earnings consist of a monthly salary and a 4 [#permalink]

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New post 27 Dec 2010, 14:52
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ajit257 wrote:
Sue’s monthly earnings consist of a monthly salary and a 4 percent commission on the
portion of her monthly sales that is in excess of $2,000. If Sue’s monthly salary was the
same in July as in August, how much greater were her sales in July than in August?

(1) Sue’s monthly earnings were $3,620 in July and $3,580 in August.
(2) Sue’s monthly salary was $3,500 in July and in August.

can some explain a better way to deal with such problems.


Sue's earnings=fixed salary+4/100(sales-2,000) --> earnings=fixed salary+4/100*sales-80 --> sales=25(earnings-fixed salary+80).

Given: fixed salary(July)=fixed salary(August). Question: sales(July)-sales(August)=25(earnings(July)-fixed salary+80)-25(earnings(August)-fixed salary+80)=25(earnings(July)-earnings(August)) So, all we need is the values of earnings(July) and earnings(August)

(1) Sue’s monthly earnings were $3,620 in July and $3,580 in August. Sufficient.
(2) Sue’s monthly salary was $3,500 in July and in August. Not sufficient.

Answer: A.
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Re: Sue s monthly earnings consist of a monthly salary and a 4 [#permalink]

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Re: Sue s monthly earnings consist of a monthly salary and a 4 [#permalink]

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New post 20 Dec 2016, 15:43
Bunuel can we assume it is a fixed salary? Does GMAT assume monthly salary = fixed salary? I would expect it to be specified on test day.

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Re: Sue s monthly earnings consist of a monthly salary and a 4 [#permalink]

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New post 21 Dec 2016, 01:22
raeann105 wrote:
Bunuel can we assume it is a fixed salary? Does GMAT assume monthly salary = fixed salary? I would expect it to be specified on test day.


The question specifies it perfectly: Sue’s monthly earnings consist of a monthly salary + a 4 percent commission on the portion of her monthly sales that is in excess of $2,000.
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Collection of Questions:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


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Re: Sue s monthly earnings consist of a monthly salary and a 4   [#permalink] 21 Dec 2016, 01:22
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